(i) There is a group of six persons A, B, C, D, E and F from a family. They are Psychologist, Manager, Lawyer, Jeweller, Doctor and Engineer.(ii) The doctor is the grandfather of F who is a Psychologist.(iii) The manager D is married to A.(iv) C, the Jeweller is married to the Lawyer.(v) B is the mother of F and E.(vi) There are two married couples in the family.

How is A related to E ?

Option:

A. Brother

B. Uncle

C. Father

D. Grandfather

E. None of these

Answer: D . Grandfather

Justification:

Given F is a psychologist.B is the mother of F and E is the brother or sister of F.There are only two married couples in the family. Since, D is married to A, so C, the jeweller, who is married to a lawyer, will be married to B.Again, the Manager D is married to A means A is the doctor and Grandfather of F and E.Also, no one else is an Engineer. So, E must be an Engineer.

Clearly, A is the grandfather of F and E is the brother or sister of F.So, A is the grandfather of E. Hence, the answer is (d).